Jane Dimas obtained a single-payment loan of $420 to pay a repair bill. She agreed to repay the loan in 90 days at an interest rate of 6.25% ordinary interest. What is the ordinary interest?

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!